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975 results on '"Park, Cheol Min"'

58. Lite-Rainbow: Lightweight Signature Schemes Based on Multivariate Quadratic Equations and Their Secure Implementations

Author

Shim, Kyung-Ah, Park, Cheol-Min, Baek, Yoo-Jin, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Biryukov, Alex, editor, and Goyal, Vipul, editor

Published
2015
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69. Generating Pairing-Friendly Curves with the CM Equation of Degree 1

Author

Lee, Hyang-Sook, Park, Cheol-Min, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Shacham, Hovav, editor, and Waters, Brent, editor

Published
2009
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74. A Remark on Implementing the Weil Pairing

Author

Park, Cheol Min, Kim, Myung Hwan, Yung, Moti, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Feng, Dengguo, editor, Lin, Dongdai, editor, and Yung, Moti, editor

Published
2005
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76. Energy-Efficiency Method for Cluster-Based Sensor Networks

Author

Nam, Kyung-Won, Hwang, Jun, Park, Cheol-Min, Kim, Young-Chan, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Gervasi, Osvaldo, editor, Gavrilova, Marina L., editor, Kumar, Vipin, editor, Laganà, Antonio, editor, Lee, Heow Pueh, editor, Mun, Youngsong, editor, Taniar, David, editor, and Tan, Chih Jeng Kenneth, editor

Published
2005
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82. Pd Sulfidation‐Induced 1T‐Phase Tuning in Monolayer MoS2 for Hydrogen Evolution Reaction.

Author

Mai, Hien Duy, Jeong, Sangmin, Bae, Gi‐Nam, Tran, Ngoc Minh, Youn, Jong‐Sang, Park, Cheol‐Min, and Jeon, Ki‐Joon

Subjects
MONOMOLECULAR films, X-ray photoelectron spectroscopy, HYDROGEN evolution reactions, MOLYBDENUM disulfide, PHASE transitions, METAL activation
Abstract

For single‐atom‐layer hydrogen evolution reaction catalysts, enrichment of the 1T‐phase in monolayer molybdenum disulfide is important to achieve ideal metal utilization efficiency and exposure of active surface atoms. Herein, it is discovered that the 1T‐phase degree in monolayer MoS2 can be enhanced through sulfidation of the Pd species deposited on MoS2 (PdxSy/1T‐MoS2). Raman and X‐ray photoelectron spectroscopy reveal that the sulfidation‐assisted phase transition results in considerably greater proportions of 1T‐phase fraction (up to 86%) without using alkali‐metal‐based approaches. Observations of S‐atom displacement/translation at the atomic level contribute to the understanding of the phase transformation of MoS2. The maximized surface atom activation and metal utilization efficiency in PdxSy/1T‐MoS2 lead to unprecedentedly high mass activity (−3444 A mgPd−1) and turnover frequency (1892 s−1), three orders of magnitude higher than those of commercial Pt/C 10 wt% (3.6 A mgPt−1 and 3.6 s−1). The sulfidation‐assisted 1T‐phase enrichment has major implications for the designs of efficient electrocatalysts through MoS2 phase engineering. [ABSTRACT FROM AUTHOR]

Published
2023
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